单嘴精炼炉技术的开发与应用

Development and Application of Single Snorkel Refining Furnace

单嘴精炼炉是由中国提出的一种新型真空钢水精炼设备。它具有结构简单、精炼效率高、真空冶炼喷溅少、生产成本低等优点,已经被越来越多的冶金工作者所认识。通过在工业性生产中冶炼轴承钢、超低碳钢和无取向硅钢等品种的实践表明:该炉型在深脱碳、脱硫、脱氧和夹杂物去除等方面表现出了很好的冶金特性,并取得了较为满意的精炼效果。采用物理模拟和数学模型相结合的办法,对单嘴精炼炉的主要操作参数:吹气流量、吹气位置、浸渍管内径、浸渍管插入深度等工艺参数和流动特性均进行了详细和深入的摸索,所得出的研究结果对实际生产起到了重要的参考和指导作用。随着单嘴精炼炉技术研究的不断深入和完善,这种新型炉外精炼设备必将发挥其自身特点,逐步得到应用和推广。还介绍了由日本新日铁提出的REDA精炼炉,它的装备和原理与单嘴精炼炉有一定的相似性,已经被成功应用于超低碳钢及不锈钢的生产。

Single snorkel refining furnace （SSRF） is new equipment in steel refining which is invented from China. It is known by more and more people as simple construction, high production efficiency and little splash in vacuum refi- ning. It has been used to produce bearing steel, ULC steel and non oriented electrical steel domestically. SSRF has good metallurgical properties at deeply decarburization, desulfurization, deoxidation, remove inclusions and so on, and achieved good refining results. The operating parameters such as gas flow rate, plug location, inner diameter of snorkel and immersing depth of snorkel in SSRF were widely study by water model and mathematical model. The re- sults of aforementioned study can play important reference and instructive role for commercial production. In this pa- per, REDA as a similar equipment from construction and principle that invented in Japan was also discussed. It has been applied to produce ULC steel and stainless steel.